Composite photographic plate and frame



March 7, 1939. c E u H E &149536 COMPOSITE PHOTOGRAPHIC PLATE AND FRAME Filed Sept. 15, 1937 INVENTOR ATTORNEY&

Patented Mar. 7, 1939 I 2,149,636

" UNITED ST'ATES PATENT OFFICE eouros'm PHOTOGRAPHIC nm AND Charles E. slaughter, Westfleld, N. J., assignor to Plaskon Company, Incorpo-ated, Toledo, Oh! a. corpo-ation ot Delawa'e Application September 15, 1937. Serial No. 164315 2 Claims. (CL 95-8) This invention relates to photographic plates part of the sensitized emulsion being removed to and frames, and particularly to plates and frames show the hacking therefor; such as are used in automatic photographic ma- Figure III is an enlarged sectional view taken chines, though the invention may also be emsubstantially along the line 'III- III of FigureII; 5 ployed in photographie plates and frames which Figure IV is a similar sectional view showing a. 5

'are not processed in automatic machines. modified form of a composite plate' and frame such plates and frames usually have been asembodying my invention; and sembled from a plate with a light-sensitive coat- Figure V is a sectional view illustrating aning, and a stamped sheet metal frame. When other embodiment of the composite photographic processed in automatic photographic machines, plate and frame of my invention., 10

they are stacked in magazines, from whence they The composite plate and frame may be of recare fed one by one to a position behind the lens tangular, octagonal or other shape, but it is of the photographic machine, where they are shown in the drawing as round since some types exposed. They are then subjected to the action of automatic photographic machines are adapted of developing and rinsing fluids, and within very for handling round shapes. 15

short intervals after exposure they are ejected The frame I and hacking 2 of the composite from the machine. The automatic machines thus article are integrally molded of synthetic plastic produce p'hotographs which are surrounded and molding material which may be either a thermosupported by sheet metal frames. such frames setting plastic, such as urea-formaldehyde conoften contain *hollows and interstices which are densation product, or may be permanently ther- 20 liable to trap portions of the developing'fluid and moplastic, such as pyroxylin or cellulose acetate permit it subsequently to leak out and dampen or material. I prefer to use materials of light or.

stain the photograph. pastel shades, either plain or mottled, and at- One of the objects of my invention is the protractive eifects can be attained by the use of mavision of' a. composite photographic plate and terials which are translucent or cloudy. 25 frame which is free from hollows and interstices Spread up'on the inner surface of the backing 2 liable to trap treating fiuids. is a ,layer of light-sensitive material 3, -such as Another object of my invention is to provide p o r phic emulsion. The li itiv a composite photographic plate and frame which erial 3 may be pp d dir tly to t e i er suris impervious to, and inert to, the action of treatface Of the i g '2, which may b roughened' 30 ing fluids. v to insure better 'adherence between the surface Another object is to provide a composite photo- Of the plate and the light-sensitive t r l, Or graphic plate and frame of highly attractive a an adhesive may be interposed between the lightpearance. r sensitive material 3 and the hacking 2. t another object is t provide a For economica production of the film of light- 35 posite plate and frame of such conf rmati sensitive material, it is usually spread upon a flat as to stack properly in magazines of automatic of sheet materiali Papr cellulose photographic machines, and having proper mtrate or cellulose acetate. Light-sensitive maformation for passage through the automatic terial 50 spread p Paper, cellulose nitrate 40 magazines of such machin without n m of or cellulose acetate may be incorporated in the 40 breakage or i jury composite plateand frame of my invention, in Other objects and advantages will be app'arent the manner mustl'ated in Flgure IV by fastening from the following description, in which referthe paper or Other PP Sheet 5 to the inner ence is had to theaccompanying drawing illusof the backmg 2 by m of an trating preferred embodimen'ts of my invention and wherein similar reference numerals desig- In the form of my invention mustrated in ur h nsi nate smilar parts throughout the several views. g i g g fi g In the drawing: is hollowed, as indicated by the numeral 'I to Figur I 15 an elevatioml View of a composite prevent injury to the sensitized surfaces when plate and ame embodymg my invention, bearthe plaques are stacked. This form of the deing a v loped photograph; vice facilitates the spreading of the emulsion, but Figure IE s a similar view showing a composite it does not constitute a tray-like receptacle for plate' and frame embodying my invention with its the developing fluid. i sensitized emulsion in undeveloped condition, a Various expedients maybeemployed for roug h- V amaase enin'g the inner surface of the backing 2. For 1. A combination photograph backing frame examples, the surface itself may be sandblasted, or it may be molded against a. surface which has been sandblasted or etched with acid.

The frame portion I of the composite structure may be plain or embossed, and the outer or` rear surface' of the backing 2 may be impressed with ornamental figures or with informational p indicia.

The frame may be of any desired cross-sectional shape. Where the composite plate and frame is so used that it acts as a tray to retain development fluid which is afterward expelled by centrifugal action, the walls of the frame portion l may be sloped to facilitate the discharge of the fluid.

From the foregoing description it will be seen that I have provided a composite frame andand development tray comprising a molded fiat backing portion surrounded by a heavy encircling frame, said flat backing portion and heavy frame being integrally formed of thermosetting synthetic molded material inert to the action of photographic development and fixng fluids and constituting a rigid development tray free of grooves and exterior corners and capable of being stacked with like structures in magazines, there being a. layer of light-sensitive material overlying said backing portion, and means for 'causing said light-sensitive material to adhere to said backing portion.

2. A combination photograph backing iframe I backing portion, and means for causing said lightsensitive material to adhere to said backing portion.

CHARLES E. SLAUGHTER. 

